package com.hps;

import com.rabbitmq.client.*;

import java.io.IOException;
import java.util.concurrent.TimeoutException;

public class CustomConsumer {
    private final static String QUEUE_NAME = "rabbitMQ.test";

    public static void main(String[] args) throws IOException, TimeoutException {
        // 创建连接工厂
        ConnectionFactory factory= new ConnectionFactory();
        // 设置RabbitMQ相关信息
        factory.setHost("localhost");
        // 创建一个新的连接
        Connection connection = factory.newConnection();
        // 创建一个通道
        Channel channel = connection.createChannel();
        // 声明要关注的队列
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
        System.out.println("CustomConsumer Waiting Received messages");
        // DefaultConsumer 类实现了Consumer接口, 通过传入一个频道,
        // 告诉服务器我们需要哪个频道的消息, 如果频道中有消息, 就会执行回调函数handleDelivery
        Consumer consumer = new DefaultConsumer(channel) {
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                String message = new String(body, "UTF-8");
                System.out.println("Consumer Received '" + message + "'");
            }
        };

        // 自动回复队列应答 -- RabbitMQ中的消息确认机制
        channel.basicConsume(QUEUE_NAME, true, consumer);
    }
}
